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MC74ACT259D from MOT,Motorola

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MC74ACT259D

Manufacturer: MOT, ON

8-BIT ADDRESSABLE LATCH

Partnumber Manufacturer Quantity Availability
MC74ACT259D MOT, ON 202 In Stock

Description and Introduction

8-BIT ADDRESSABLE LATCH # **MC74ACT259D: A High-Performance 8-Bit Addressable Latch for Advanced Digital Systems**  

In the realm of digital electronics, efficient data handling and storage are critical for system performance. The **MC74ACT259D** stands out as a high-speed, low-power 8-bit addressable latch designed to meet the demands of modern digital circuits. With its advanced CMOS technology and versatile functionality, this integrated circuit (IC) is an excellent choice for applications requiring reliable data retention and fast signal processing.  

## **Key Features and Benefits**  

### **1. High-Speed Operation**  
The MC74ACT259D operates with a propagation delay of just **5.5 ns (typical)**, making it ideal for high-frequency digital systems. Its **ACT (Advanced CMOS Technology)** architecture ensures fast switching while maintaining low power consumption, a crucial advantage in power-sensitive designs.  

### **2. 8-Bit Addressable Latch Functionality**  
This IC functions as an **8-bit addressable latch**, allowing individual bits to be written or retained based on a 3-bit address input. The **parallel load capability** simplifies data handling, while the **asynchronous clear function** provides immediate reset control, enhancing system flexibility.  

### **3. Wide Operating Voltage Range**  
Supporting a **2.0V to 6.0V** supply range, the MC74ACT259D is compatible with both **TTL and CMOS logic levels**, ensuring seamless integration into mixed-voltage environments. This versatility makes it suitable for a broad range of applications, from industrial controls to consumer electronics.  

### **4. Robust Output Drive Capability**  
With **24 mA output drive current**, the MC74ACT259D can directly drive moderate loads, reducing the need for additional buffer circuits. Its **balanced output impedance** minimizes signal distortion, ensuring reliable data transmission in high-speed systems.  

### **5. Enhanced Noise Immunity**  
Designed with **Schmitt-trigger inputs**, this latch offers superior noise rejection, making it resilient to signal fluctuations in electrically noisy environments. This feature is particularly valuable in automotive, industrial, and communication applications where signal integrity is critical.  

## **Applications**  

The MC74ACT259D is widely used in systems requiring **data storage, address decoding, and register-based operations**. Common applications include:  

- **Microprocessor and microcontroller interfacing**  
- **Memory address latching**  
- **Data multiplexing and demultiplexing**  
- **Industrial control systems**  
- **Automotive electronics**  
- **Communication equipment**  

## **Conclusion**  

The **MC74ACT259D** is a high-performance, versatile 8-bit addressable latch that delivers speed, efficiency, and reliability for advanced digital designs. Its robust architecture, wide voltage compatibility, and noise-resistant inputs make it a dependable choice for engineers seeking a solution for data storage and signal processing. Whether used in embedded systems, automation, or telecommunications, this IC ensures optimal performance in demanding applications.  

For designers looking to enhance their digital circuits with a fast, low-power, and highly functional latch, the MC74ACT259D presents a compelling option that meets modern electronic requirements.

Application Scenarios & Design Considerations

8-BIT ADDRESSABLE LATCH

Alternative Part Number

  • CD74ACT259E --: Same ACT CMOS logic family 8-bit addressable latch, direct functional equivalent with compatible pinout and TTL-level inputs.
  • SN74ACT259N --: ACT-series 8-bit addressable latch offering equivalent function and speed, widely available as a drop-in replacement.
  • 74ACT259PC --: Standard 74ACT 8-bit addressable latch from a major logic supplier, functionally interchangeable with the original device.

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